HIGH 7.1 NVD
CVE-2026-82273
Mastra through 1.63.0 contains an authentication bypass vulnerability in the memory API thread ownership validation when mapUserToResourceId callback is omitted
Mastra through 1.63.0 contains an authentication bypass vulnerability in the memory API thread ownership validation when mapUserToResourceId callback is omitted from configuration. Authenticated attackers can enumerate all threads via GET /api/memory/threads and read conversation history and metadata of other resource owners.
References
- https://github.com/mastra-ai/mastra
- https://github.com/mastra-ai/mastra/blob/b7e66f0c478a227985e0062794ef058c3714fabf/packages
- https://github.com/mastra-ai/mastra/issues/18911
- https://www.vulncheck.com/advisories/mastra-memory-api-thread-ownership-check-is-a-no-op-w
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-28 via NVD.
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